Grain Harvesting Issues
Grain harvest has started but not without problems. Late planting, and a wet summer, especially with the wettest August on record; is causing grain problems in both soybeans and corn. Harvest lately has been delayed due to slow dry down and wet weather. In soybeans, farmers are reporting black soybeans. Black discolored soybeans at harvest can is often linked to dry and wet soybean growing stress and fungal diseases affecting the plants during their growth cycle. Saprophytic fungi can colonize dead plant material, leading to black dust clouds during harvest. Fungi like Cercospora or Diaporthe can cause discoloration and some viruses may cause discoloration. Enlist soybeans also has a trait that causes soybean coat discoloration which is not related to fungi or virus infection. A drying (drought like) cycle followed by repeated wet cycles can cause seed discoloration and mold, particularly in areas with late rains in August and September. While primarily causing purple discoloratio...